Transactions of Materials and Heat Treatment

Title：Precision forming process of cross shaft with small flash

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ClassificationCode：TG316

year,vol(issue):pagenumber：2020,45(4):39-44

Abstract：

Aiming at the problems of large flash and large forming force during the hot die forging process of cross shaft, according to the shape and size of cross shaft and the characteristics of forging process, a precision forming process of cross shaft with small flash was proposed. The numerical simulation on the precision forming process of cross shaft with small flash was carried out by Deform-3D, and the simulated cross shaft forging and its metal velocity field, equivalent strain and load-time curve of mold were analyzed. The simulation results show that the cross shaft forging is completely formed, the metal flows uniformly, and the mold load is reduced. Combined with the simulation results, the cross shaft forming process test was carried out by designed and manufactured molds. The cross shaft forgings obtained in the test were full filled and no defects such as folds and surface cracks, and the flash was significantly reduced, which were consistent with the simulation results. The results show that changing the hot die forging process of cross shaft, the precision forming process of cross shaft with small flash is used to reduce the forging flash and the forming load during the forging process.

Funds：

郑州市科技重大专项资助项目(152PZDZX007)

李春洋（1993-），男，硕士研究生 E-mail：17537158870@163.com 通讯作者：刘华（1962-），男，博士，博士生导师，研究员 E-mail：13903832971@163.com

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